The Rangers signed Heuer to a minor-league contract on Thursday, per the MLB transaction log.

Heuer (elbow) is slated to begin a throwing program in mid-November, Meghan Montemurro of the Chicago Tribune reports.

Heuer underwent surgery on his fractured right elbow Friday and is out for the rest of the season, Maddie Lee of the Chicago Sun-Times reports.

Heuer (elbow) was removed from his latest rehab appearance Tuesday with Triple-A Iowa due to an apparent arm injury, Paul Sullivan of the Chicago Tribune reports.

Heuer (elbow) will make another rehab appearance Tuesday with Triple-A Iowa, Tony Andracki of Marquee Sports Network reports.

Heuer (elbow) is on track for another rehab outing this week with Triple-A Iowa, Tim Stebbins of MLB.com reports.

Heuer (elbow) is scheduled for a third minor-league rehab appearance Friday with Triple-A Iowa, Meghan Montemurro of the Chicago Tribune reports.

Heuer (elbow) will begin a rehab assignment with Triple-A Iowa on Saturday, Jordan Bastian of MLB.com reports.

Heuer (elbow) threw a 25-pitch simulated game Wednesday, Andy Martinez of Marquee Sports Network reports.

Heuer (elbow) will throw a one-inning simulated game at the Cubs' spring training complex in Arizona on Saturday, Ryan Herrera of AllCHGO.com reports.